QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

15 km SSE of Maria Antonia, Puerto Rico

· 6.0 km deep · released about 7.6 lb of TNT

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10 km30 km60 km120 km N Guánica Municipio 15 kmGuayanilla Municipio 18 kmPeñuelas Municipio 23 kmLajas Municipio 26 kmYauco Municipio 27 kmSabana Grande Municipio 29 kmPonce Municipio 30 kmSan Germán Municipio 36 kmMaricao Municipio 38 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 1.6 (md)
Depth
6.0 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 15 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2377 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 17.8465, -66.8330. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 15 km (9 mi) SE of here earthquakes near Guánica Municipio
Guayanilla Municipio, PR 18 km (11 mi) SSW of here earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 23 km (14 mi) SSW of here earthquakes near Peñuelas Municipio
Lajas Municipio, PR 26 km (16 mi) SE of here earthquakes near Lajas Municipio
Yauco Municipio, PR 27 km (17 mi) S of here earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 29 km (18 mi) SSE of here earthquakes near Sabana Grande Municipio

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

60 earthquakes have been recorded within 50 km since this one.

  1. 2.4 2 km S of Maria Antonia, Puerto Rico
  2. 1.9 5 km SSW of Indios, Puerto Rico
  3. 2.0 2 km SSE of Palomas, Puerto Rico
  4. 2.1 5 km S of Magas Arriba, Puerto Rico
  5. 1.8 11 km SSE of Indios, Puerto Rico
  6. 2.6 2 km WNW of Indios, Puerto Rico
  7. 1.7 3 km SE of Indios, Puerto Rico
  8. 2.0 2 km S of Guayanilla, Puerto Rico
  9. 2.4 5 km SSE of Guánica, Puerto Rico
  10. 1.8 0 km ENE of Magas Arriba, Puerto Rico
  11. 1.6 2 km WSW of Indios, Puerto Rico
  12. 1.8 2 km NNW of Indios, Puerto Rico
  13. 2.3 8 km SSW of Tallaboa, Puerto Rico
  14. 2.5 3 km SW of Guánica, Puerto Rico
  15. 3.0 Puerto Rico region

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

For this area

The largest earthquake within 50 km in our catalogue was M 6.4 on 2020-01-07 — it released about 16,000,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.